Milk and milk products have been an integral part of natural healing for centuries.
Some of these timeworn tips may seem rather unusual to you, because you have never heard of them before. So if you find yourself saying, hey, I do not know that, believe it, because this is based on longtime experience, even though there is no scientific reason given behind the effect.
Scientific research can spend lots of time, money and energy, in trying to prove something, but when the facts are right in front of you, take it for granted that all these precautions and tips are based on experience, and knowledge of the people who went before us.